CN102280823A - Switch device - Google Patents
Switch device Download PDFInfo
- Publication number
- CN102280823A CN102280823A CN2011100332234A CN201110033223A CN102280823A CN 102280823 A CN102280823 A CN 102280823A CN 2011100332234 A CN2011100332234 A CN 2011100332234A CN 201110033223 A CN201110033223 A CN 201110033223A CN 102280823 A CN102280823 A CN 102280823A
- Authority
- CN
- China
- Prior art keywords
- switching device
- plate body
- hole
- fin
- airintake direction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000012530 fluid Substances 0.000 claims abstract description 40
- 238000009423 ventilation Methods 0.000 claims description 30
- 239000000463 material Substances 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims 1
- 230000009471 action Effects 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 39
- 230000000694 effects Effects 0.000 description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000004020 conductor Substances 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 6
- 230000002411 adverse Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000010891 electric arc Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 239000000956 alloy Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 210000000981 epithelium Anatomy 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- -1 hydroxide metal compounds Chemical class 0.000 description 2
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 2
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 2
- 239000000347 magnesium hydroxide Substances 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 230000002000 scavenging effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/025—Safety arrangements, e.g. in case of excessive pressure or fire due to electrical defect
Abstract
The invention provides a switch device which can relieve affect of high termperature gas to surrounding devices of the switch device when inner short-circuit accident happens. In a prior air inlet part, a problem that a valve can not work exists in a structure of employing the valve which conducts the closing action connectedly with the rise of inner pressure to close the air inlet part. The switch device in the invention includes a shell (1) used to introduce outer gas into the air inlet part receiving the electronic devices. A plate-shaped body (18) with through holes (18) having a form factor arranged to have a larger fluid energy loss relatively to an air outlet direction than relatively to an air inlet direction. Thus, the energy of high temperature and high pressure is reduced and the movable structures such as the valve is saved.
Description
Technical field
The present invention relates to a kind of metal-closed switch gear of taking in power equipment such as circuit breaker, particularly to having the improvement of ventilation with the switching device of intake section.
Background technology
The induction heat of the Joule heat that the metal-closed switch gear that the rated current capacity is bigger is caused owing to switching on to main circuit conductor and the works of conductor periphery etc. cause the air themperature of conductor temperature and periphery to rise.For being risen, this temperature is suppressed at certain level, in order to introduce ambient atmos, reduce Inside Air Temperature with the convection current that utilizes switching device inside, thereby conductor portion etc. is cooled to below certain temperature, the general structure of having carried out following design that adopts: promptly, air inlet is set, exhaust outlet is set at the top at the back side of housing or the lower position of front, except the convection current in the housing, the head difference that also effectively utilizes porting is to improve scavenging efficiency.When switching device turns round, though extremely rare, might cause the main circuit generation electric accident of switching device inside because of a variety of causes.Under the situation that electric accident takes place, this part can produce electric arc, and this arc energy can cause internal pressure sharply to rise, and causes producing high temperature and high pressure gas.
In the less switching device of existing rated current, because the porting of ventilation usefulness generally is not set, therefore produce under the situation of high temperature and high pressure gas in inside, high temperature and high pressure gas can only be discharged to outside the cabinet from the pressure relief opening that is arranged at the top by the opening of pressure relief plate.On the other hand, in the bigger switching device of rated current, high-temperature gas not only can also can spray from the air inlet that is arranged at housing back or front from the pressure relief opening at top and the exhaust outlet ejection of ventilation usefulness.Because the exhaust outlet at top originally just is set to suppose the pressure relief opening when having an accident,, but need the inhibition high-temperature gas to spray from the air inlet of the ventilation usefulness that is arranged at back side of shell and front even therefore high-temperature gas is also no problem from this ejection.In order to tackle such accident, internal abnormality pressure when utilizing accident rises and makes the single-phase valve formula valve that is arranged at the air inlet oral area along with the rising of internal pressure is sealed air inlet from the inboard, thus prevent high temperature and high pressure gas from ventilation path, adverse current taking place and from air inlet to outside discharge (for example with reference to patent documentation 1).
Patent documentation 1:WO2009/001425A1 communique (the 1st page, Fig. 1)
Summary of the invention
In aforesaid prior art,, need guarantee stable single-phase valve formula valve (being designated hereinafter simply as valve) action for arc energy from the less zone of arc energy to the zone of the maximum-norm of system.Simultaneously, require, melting loss does not take place and produce hole for the concentrating of the static electric arc of the maximum fault current of system.Under the less situation of arc energy when fault, because driving the needed pressure of valve rises less, therefore the valve mechanism that needs to adopt the lightweight etc. of valve, moves with small driving force, under the bigger situation of fault electric arc energy, owing to require under higher pressure, can not be damaged, and thereby material and the thickness that melting loss is left through hole can not take place because of the heat of electric arc, therefore, the quality that has a size to a certain degree because of needs causes comparatively difficulty of lightweight.
Thus, under the less situation of arc energy and under the bigger situation of arc energy, in the design of valve, can't take into account lightweight simultaneously and guarantee intensity and guarantee anti-melting loss performance, be difficult to valve be driven, spray to the outside thereby come that air inlet is sealed the high temperature and high pressure gas that stops in the switching device corresponding to the accident in whole zone.Therefore, under the less situation of fault current value when the internal electric accident takes place and under the accident condition such as small-scale ground fault, can cause internal pressure to rise and reduce, thereby possibly can't make the valve event that utilizes this pressure that ventilation path is sealed come ventilation path is sealed.In addition, use the switching device of valve to depend on the free flowing exercise of valve, for example, need be used to guarantee that the stable inspection of action of the rotation section of valve is safeguarded, cause under the affixed situation of lubricant being not good at because of maintenance waiting, may move bad.
In addition, in the normal operation of switching device, owing to need the heating of inside be dispelled the heat by taking a breath to come, therefore the air inlet oral area need be opened all the time, just in case valve closing, then because air inlet is in closure state all the time, there has not been the radiating effect of the inside that causes because of ventilation, therefore, internal temperature becomes very high.Consequently, the life-span of switching device becomes short especially, according to circumstances, also may become because of the unusual reason that causes accident that heats in the cabinet.Therefore, valve need make air inlet stay open, and when having an accident, closes air inlet immediately, need keep closed condition at least during duration of fault, so that the high-temperature gas that produces because of accident can be from the air inlet adverse current.Therefore, rerunning before the beginning before the running after the installing engineering of switching device begins or after common maintenance test, must confirm that valve is opened, in addition, need to confirm that the required maintenance performance of maintaining part was also guaranteed when valve was closed, have the checked operation problem such as numerous and diverse that becomes.
The present invention is used to solve aforesaid prior art problems, its purpose is, obtain a kind of cheapness, the maintenance test excellence, the switching device that reliability is higher, the energy that this switching device is had high pressure-temperature gas reduces, and the moment of inertia of not using the friction of the size of the such arc energy when various accident takes place of single-phase valve formula valve and rotation section or valve itself causes the member of bigger influence to performance, arc energy when making accident is in the bigger scope from minimum accident to very large accident, make the energy stabilization ground decay of high temperature and high pressure gas, the speed of gas is descended, reduce the temperature of gas, thereby gas is discharged to the outside from intake section.
Switching device involved in the present invention is to comprise being provided with the switching device of housing that is used for ambient atmos is introduced the intake section of the inner space take in electric equipment, above-mentioned intake section is provided with plate body, and this plate body is provided with the through hole with form factor big with respect to the fluid energy loss of airintake direction with respect to the fluid energy loss ratio of discharge directions.
In the present invention, because in the intake section of introducing ambient atmos, used to be provided with and had the plate body that loses the through hole of the form factor that loses greater than fluid energy with respect to the fluid energy of discharge directions with respect to airintake direction, therefore, when the internal electric accident takes place, the flow resistance of the discharge directions of the gases at high pressure of discharging to the outside along the direction opposite with normal operation from intake section is bigger, thereby makes the energy attenuation of high temperature and high pressure gas.Therefore, can in the accident minimum in the bigger scope of the very large accident of arc energy, stably suppress high pressure-temperature gas and spray from intake section from arc energy.In addition, owing to do not use movable structure, therefore can obtain the maintenance test excellence, switching device cheap, that reliability is higher with the such moment of inertia of single-phase valve formula valve.
Description of drawings
Fig. 1 is the side sectional view that the related switching device of embodiments of the present invention 1 is shown briefly.
Fig. 2 is the stereogram that expression is used for plate body intake section shown in Figure 1, that have through hole.
Fig. 3 is the front view of plate body shown in Figure 2.
Fig. 4 be Fig. 3 the IV-IV line to looking cutaway view.
Fig. 5 is under the situation of first circulating direction of the through hole part of the convex of plate body shown in Figure 4, the figure that the form factor relevant with the fluid energy loss describes.
Fig. 6 is to being under the opposite situation with the circulating direction of the through hole part of the similar convex of plate body shown in Figure 5, the figure that the form factor relevant with the fluid energy loss describes.
Fig. 7 is the stereogram of the non reversibility ventilation member of the expression plate body that used multi-disc execution mode shown in Figure 21.
Fig. 8 is the stereogram that the non reversibility ventilation member of the related switching device employed plate body of multi-disc embodiments of the present invention 2 has been used in expression.
Fig. 9 is the front view of non reversibility shown in Figure 8 ventilation member.
Figure 10 is the stereogram of the employed non reversibilities ventilation of the related switching device of expression embodiments of the present invention 3 member.
Figure 11 is the stereogram of expression non reversibility ventilation deformation of members example 1 shown in Figure 8.
Figure 12 is the stereogram of expression non reversibility ventilation deformation of members example 2 shown in Figure 8.
Label declaration
1 housing, 2 circuit breakers, 3 breaker compartments, 16 intake sections, 16a blow vent, 18,18A plate body, 18a, 18b through hole, 17 non reversibilities ventilation member, 19 pressure relief openings, 20,20A, 20B fin, 20a hole.
Embodiment
Execution mode 1.
Fig. 1 illustrates the side sectional view that is used to implement the related switching device of embodiments of the present invention 1 briefly.In the drawings, the inside of the housing 1 of the grounded metal system of formation switching device is divided into a plurality of compartments.At the left (face side) of figure, dispose the breaker compartment 3 of the circuit breaker 2 of taking in pull-out type, this circuit breaker 2 can be extracted out from face side.Be set with the 4a of the portion that opens circuit, the 4b of the main circuit that separates predetermined distance up and down on the rear wall of breaker compartment 3, can load and unload with the splicing ear of giving prominence to the rear surface (right-hand among the figure) of circuit breaker 2.And, in the open circuit 4a of portion, 4b, be provided with open circuit terminal 5a, 5b.The top of breaker compartment 3 is control appliance compartments 6 of taking in control instrument (not shown).
The rear side top of breaker compartment 3, be the bus compartment 9 that is equipped with the bus 7 of the three-phase that is supported on support insulator 8, be accommodated in bus compartment 9 by fork conductor 10 ground connection that links to each other with open circuit terminal 5a and the bus 7 of a distolateral 4a of the portion that opens circuit that is connected of circuit breaker 2.The rear of bus compartment 9 and below are the cable compartments 12 of taking in the cable 11 of load-side.The load-side conductor 13 that is provided with via running through current transformer 14 with the terminal 5b that opens circuit of another distolateral 4b of the portion that opens circuit that is connected of circuit breaker 2 is connected with cable 11.In addition, the terminal 5b that opens circuit is connected with earthed switch 15.
Below at the cable compartment 12 of figure right-hand (back side) is provided with to have and has used the intake section 16 that is used for ambient atmos is introduced from the outside blow vent 16a of the impeller in the housing 1.Housing 1 an inner side at intake section 16, as Fig. 2～shown in Figure 4, be provided with the non reversibility ventilation member 17 that has used the plate body 18 that is provided with through hole 18a, described through hole 18a has the form factor that loses greater than the fluid energy with respect to airintake direction with respect to the fluid energy loss of discharge directions, its purpose is, when running well, on the airintake direction shown in the arrow A, reduce the fluid energy loss in order in switching device, to take a breath, and when the internal short-circuit accident takes place, thereby the fluid energy that high temperature and high pressure gas had that adverse current is discharged along the arrow B direction by intake section 16 from switching device inside is lost in a large number.
On the other hand, rightabout with above-mentioned arrow A direction as can be known, the flow direction when being equivalent to the internal short-circuit accident takes place, fluid is from the pipeline inlet of shape shown in Figure 6 related form factor ζ=0.56 of fluid energy loss when the arrow B direction flows through.The present invention utilizes aforesaid characteristic, the plate body 18 that Fig. 2～Fig. 4 illustrated is for example disposed along following direction: promptly, energy is lost under the situation that fluid passes through along airintake direction diminishes, under the situation that fluid passes through along the discharge directions opposite with airintake direction, become big.According to simple calculating, the form factor ζ that flows out the through hole 18a of direction can regard as than about about 10 times～100 times of the form factor ζ of the through hole 18a of inflow direction, and is big at least about 10 times.
Non reversibility ventilation member 17 is aforesaid by multi-disc, as the plate body 18 combinations major function key element, Fig. 2 and constitute, the inside when described plate body 18 is made into to be suitable for the scale of electric accident of the switching device inside under each rated capacity of switching device and normal power-up take a breath needed ventilation volume the two.In addition, the top of housing 1 is provided with a plurality of pressure relief openings 19 and waits other structure identical with existing switching device.
Next, the action to the execution mode 1 that constitutes as mentioned above describes.Since in the above-mentioned switching device, when running well, be flowing of the air that caused of the caused free convection of heating of the caused head difference of height of porting of switching device and switching device inside along the flow velocity v of the airintake direction of representing with arrow A by the air of intake section 16, therefore, the level that is about 0.5～1.0m/s.Different therewith is, the flow velocity of the gases at high pressure when the internal short-circuit accident takes place depends on the scale of internal electric accident, but after accident takes place, the internal pressure of switching device sharply rises, utilize this pressure that the pressure relief plate at the top that is arranged at switching device is opened, gases at high pressure are emitted from pressure relief opening 19.The pressure propagation speed of this moment approaches velocity of sound, is approximately about 100～300m/s from the speed of the gases at high pressure of pressure relief opening 19 ejection.Gases at high pressure although it is so are not directly to discharge from intake section 16, but the flow velocity v during exhaust is approximately big 100 times to 600 times during than air inlet.
The fluid loss energy (h) of the pipeline of known general fluid is directly proportional with different form factors that determine (ζ) according to the shape of pipeline inlet, with flow rate of fluid (square being directly proportional v).That is, decide according to the relational expression shown in the following formula 1 in the energy loss (h) when being provided with the plate body 18 of through hole 18a.
H=ζ * (v2 ÷ 2g) ... formula 1
Wherein, v is a flow rate of fluid, and g is an acceleration of gravity.
Because the relational expression of above-mentioned formula 1 is set up, during the air inlet of the fluid energy loss during high temperature and high pressure gas exhaust when the internal short-circuit accident takes place when running well, 10 times poor arranged on form factor (ζ) approximately, (v) go up 100 times poor arranged approximately in flow rate of fluid, therefore, with about fluid energy loss more than 100,000 times.That is, the fluid energy loss during air inlet when running well is compared, and reduces about 100,000 times energy.Therefore, can utilize non reversibility ventilation member 17 correspondingly to reduce the energy of high temperature and high pressure gas.
As mentioned above, be in a ratio of rightabout (discharge directions) when the flow direction of the air in the intake section 16 when the internal electric accident takes place and normal operation, and, the speed of the fluid of the airintake direction during normal operation is the low speed that is about 0.5～1.0m/s, and it is relative with it, when having an accident, become the high speed that is approximately 100～300m/s for the fluid velocity of the discharge directions of direction opposite when running well according to simple calculating, be conceived to above 2 points, because intake section 16 possesses and has when running well that form factor (ζ) diminishes on airintake direction, and the plate body 18 of the through hole 18a of the shape that form factor (ζ) change is big on discharge directions when having an accident, therefore, the flow resistance of the discharge directions of switching device involved in the present invention is approximately 100,000～3,600,000 times with respect to airintake direction, switching device involved in the present invention has good scavenging performance, and can suppress the ejection of high pressure-temperature gas when having an accident.
In addition, as shown in Figure 7, by overlapping multi-disc plate body 18 or change the size of through hole 18a of plate body 18 or the quantity of through hole 18a, can make the energy of high temperature and high pressure gas reduce effect and change in the larger context.In addition, as the material that constitutes plate body 18, except general metal such as iron type materials, can expect to use for example porous sintered metal or foamed alloy etc. also can reach the effect of the energy that reduces high temperature and high pressure gas.In addition, can produce during at the tunicle of the hydroxide metal compounds (hydroxide) such as surface coverage magnesium hydroxide of plate body 18 or in burning more hydrone material tunicle or contain the tunicle of the macromolecular material of more hydrone, reduce on the effect also relatively effectively at the energy that improves high temperature and high pressure gas.In addition, as plate body 18, can expect to use the noninflammability macromolecular material that contains more hydrone also to have identical effect.
In addition, the internal structure of housing 1 shown in Figure 1 is a shown example, is not limited to the configuration structure among the figure.In addition, also can adopt left (face side) part or the above ground portion of figure to possess the structure of intake section 16 or structure in addition.No matter under which kind of situation; as long as high temperature and high pressure gas may flow out to the position of switching device outside by these intake section 16 adverse currents during at the intake section 16 that has normal ventilation usefulness and in generation internal short-circuit accident; the plate body 18 that setting has through hole 18a gets final product, and described through hole 18a has the form factor that loses greater than the fluid energy with respect to airintake direction with respect to the fluid energy loss of discharge directions.
As mentioned above, according to execution mode 1, because in the intake section 16 of introducing ambient atmos, used to be provided with and had the plate body 18 that loses the through hole 18a of the form factor that loses greater than fluid energy with respect to the fluid energy of discharge directions with respect to airintake direction, therefore, when the high temperature and high pressure gas that is produced is discharged outside switching device by intake section 16, can reduce the flow velocity and the temperature of high temperature and high pressure gas in the internal short-circuit accident.In addition, owing to can cool off to high temperature and high pressure gas, and do not rely on mechanical action as under the situation of having used single-phase valve formula valve, therefore can improve fail safe and reliability, and, because therefore the motion space that can save valve can obtain switching device simple in structure and cheap.In addition, maintenance also becomes more or less freely.
Fig. 8 is the stereogram that the non reversibility ventilation member of the related employed plate body of switching device of multi-disc embodiments of the present invention 2 has been used in expression, and Fig. 9 is its front view.In addition, present embodiment 2 adopts at the plate body 18 that multi-disc is provided with being rectangular a plurality of through hole 18a shown in Figure 2 when devices spaced apart sets on the ventilation direction, makes center mutual structure that alternately staggers between adjacent plate body 18 of the through hole that is formed at plate body 18.
In the drawings, be disposed on the plate body 18A of middle body, be provided with a plurality of through hole 18b with through hole 18a with being the rectangular identical, described through hole 18b be equipped on through hole 18a set on the plate body 18 of plate body 18A two side portions and have same fluid energy loss with respect to discharge directions greater than form factor with respect to the fluid energy loss of airintake direction.The center of the through hole 18b of plate body 18A is arranged in when the ventilation direction is observed as shown in Figure 9, be positioned at the through hole 18a of plate body 18 about, on the position of 1/2nd spacings that only stagger on the left and right directions.Other structures are identical with above-mentioned execution mode 1.
In adopting the execution mode 2 of structure as mentioned above, owing to alternately stagger mutually in the plate body 18 among the non reversibility ventilation member 17A, the through hole 18a of 18A, the position of 18b, therefore, the fluid loss effect of intake and exhaust further is enhanced, consequently, the energy that can improve the high temperature and high pressure gas of being discharged when the internal short-circuit accident takes place reduces effect.In this execution mode 2, because the loss of the fluid energy of intake and exhaust two aspects all becomes big, therefore, normal switching device ventilation also can reduce with the air inlet effect, so the situation bigger than the reduction of intake efficiency in the fluid energy loss of expectation on discharge directions is more effective.
Execution mode 3.
Figure 10 is the stereogram of the employed non reversibilities ventilation of the related switching device of expression embodiments of the present invention 3 member, and Figure 11 is the stereogram of expression variation 1, and Figure 12 is the stereogram of expression variation 2.In addition, in present embodiment 3, fin is installed each other at multi-disc plate body 18 shown in Figure 7.In Figure 10, in non reversibility ventilation member 17, be provided with to devices spaced apart multi-disc along the tabular fin 20 each other that is disposed at two plate bodys 18, described two plate bodys 18 are identical with execution mode 1, and devices spaced apart ground sets along airintake direction with ventilating the direction extension.In addition, there is no particular limitation for the material of fin 20, but can preferably use alloy or the porous sintered metal or the foamed alloy etc. of metal such as iron, aluminium, copper for example or these metal species.Other structures are identical with execution mode 1.
In the execution mode 3 that adopts aforesaid structure, the high temperature and high pressure gas that switching device is produced when inner electrical equipment accident takes place has with respect to the fluid energy loss of discharge directions greater than with respect to the plate body 18 of the through hole 18a of the form factor of the fluid energy loss of airintake direction the time by being provided with, its energy reduces, when passing through the gap of fin 20, by making the melt surface of fin 20, the energy of high temperature and high pressure gas further reduces, and is discharged by intake section 16.Therefore, the fluid loss effect further improves, and consequently, the energy that can improve the high temperature and high pressure gas of being discharged when the internal short-circuit accident takes place reduces effect.
In addition, also above-mentioned fin 20 can be changed into shown in the variation 1 of Figure 11 and form corrugated fin 20A, in this case, can be when high-temperature gas passes through fin 20A, by increasing the area of fin 20A, the cooling that further improves high-temperature gas.In addition, shown in the variation 2 that goes out as shown in figure 12, thereby make the method for fin 20B or a plurality of projections (omit its diagram) are set or the methods such as surface roughness chap of fin are being improved on the cooling effect also relatively effectively in that a plurality of hole 20a are set on the fin 20.In addition, can produce during at the epithelium of the hydroxide metal compounds (hydroxide) such as surface coverage magnesium hydroxide of fin or in burning more hydrone material epithelium or contain the epithelium of the noninflammability macromolecular material of more hydrone, the energy of high temperature and high pressure gas is reduced also relatively effectively.
In addition, plate body 18,18A that the structure of the non reversibility ventilation member 17 shown in the above-mentioned execution mode 1～3 is not limited to illustrate for example, in addition, self-evident, to shape, the size of its fixing means or through hole 18a, 18b, number is set, density is set, set-up mode etc. suitably changes and the structure that obtains is suitable for too.
Claims (17)
1. a switching device comprises being provided with the housing (1) that is used for ambient atmos is introduced the intake section of the inner space that electric equipment is taken in, it is characterized in that,
Be provided with to have and be arranged at described intake section greater than plate body (18) with respect to the through hole (18a) of the form factor of the fluid energy loss of airintake direction with respect to the loss of the fluid energy of discharge directions.
2. switching device as claimed in claim 1 is characterized in that,
Form described through hole (18a), make it side-prominent to the inner space one of described housing (1) on every side.
3. switching device as claimed in claim 1 or 2 is characterized in that,
The side face of ambient atmos one side of described through hole (18a) forms the concave surface with smooth curved surface.
4. switching device as claimed in claim 1 or 2 is characterized in that,
With one or more pieces described plate bodys (18) that are provided with a plurality of described through holes (18a) with being rectangular along the airintake direction setting.
5. switching device as claimed in claim 3 is characterized in that,
With one or more pieces described plate bodys (18) that are provided with a plurality of described through holes (18a) with being rectangular along the airintake direction setting.
6. switching device as claimed in claim 4 is characterized in that,
Comprise the described plate body (18) that multi-disc is provided with along airintake direction devices spaced apart ground, the center of described through hole (18a) is equipped on adjacent described plate body (18) each other alternately.
7. switching device as claimed in claim 5 is characterized in that,
Comprise the described plate body (18) that multi-disc is provided with along airintake direction devices spaced apart ground, the center of described through hole is equipped on adjacent described plate body each other alternately.
8. switching device as claimed in claim 4 is characterized in that,
At the described plate body of multi-disc (18) that is provided with along airintake direction devices spaced apart ground each other, be provided with the fin (20) that extends along the ventilation direction.
9. switching device as claimed in claim 5 is characterized in that,
At the described plate body of multi-disc (18) that is provided with along airintake direction devices spaced apart ground each other, be provided with the fin (20) that extends along the ventilation direction.
10. switching device as claimed in claim 8 is characterized in that,
Described fin (20) forms wave-like.
11. switching device as claimed in claim 9 is characterized in that,
Described fin (20) forms wave-like.
12. switching device as claimed in claim 8 is characterized in that,
Described fin is formed with a plurality of holes on (20).
13. switching device as claimed in claim 9 is characterized in that,
Described fin is formed with a plurality of holes on (20).
14. switching device as claimed in claim 8 is characterized in that,
Be formed with a plurality of projections on the surface of described fin (20).
15. switching device as claimed in claim 9 is characterized in that,
Be formed with a plurality of projections on the surface of described fin (20).
16. switching device as claimed in claim 1 is characterized in that,
Described plate body (18) has used at least a material in metallic plate, porous sintered metal and the foam metal plate.
17. switching device as claimed in claim 1 is characterized in that,
The surface of described plate body (18) has by hydroxide or in burning the time can produce the formed tunicle of material of more hydrone.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-131552 | 2010-06-09 | ||
| JP2010131552A JP5554152B2 (en) | 2010-06-09 | 2010-06-09 | Switchgear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102280823A true CN102280823A (en) | 2011-12-14 |
| CN102280823B CN102280823B (en) | 2015-11-25 |
Family
ID=45106073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110033223.4A Expired - Fee Related CN102280823B (en) | 2010-06-09 | 2011-01-24 | Switching device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5554152B2 (en) |
| CN (1) | CN102280823B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103812033A (en) * | 2014-02-13 | 2014-05-21 | 昆山振宏电子机械有限公司 | Air outlet structure of low-voltage power distribution cabinet |
| CN103812032A (en) * | 2014-02-13 | 2014-05-21 | 昆山振宏电子机械有限公司 | Air outlet structure of low-voltage power distribution cabinet |
| CN106451189A (en) * | 2016-11-12 | 2017-02-22 | 上海天灵开关厂有限公司 | Door structure of metal-enclosed switchgear |
| CN110419154A (en) * | 2017-03-15 | 2019-11-05 | Ksm铸造集团有限公司 | Coolant jacket construction |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018057063A (en) * | 2016-09-26 | 2018-04-05 | 株式会社日立産機システム | Switchgear |
| JP6713935B2 (en) | 2017-01-12 | 2020-06-24 | 株式会社日立産機システム | Switch gear |
| WO2018225153A1 (en) | 2017-06-06 | 2018-12-13 | 三菱電機株式会社 | Housing of electrical equipment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08168118A (en) * | 1994-12-15 | 1996-06-25 | Tokyo Gas Co Ltd | Press unit for inner-pressure explosion proof |
| JPH08233189A (en) * | 1995-02-28 | 1996-09-10 | Chiyoda Corp | Pipeline water hammer prevention device |
| CN2899091Y (en) * | 2006-01-25 | 2007-05-09 | 大全集团有限公司 | Pneumatic arc extinguisher of circuit breaker |
| CN201142463Y (en) * | 2007-12-21 | 2008-10-29 | 富士康(昆山)电脑接插件有限公司 | Electric connecting assembly |
| WO2008136113A1 (en) * | 2007-04-26 | 2008-11-13 | Mitsubishi Electric Corporation | Metal closed type switch gear |
| CN101536128A (en) * | 2006-09-20 | 2009-09-16 | 伊顿公司 | Gassing insulator, and arc chute assembly and electrical switching apparatus employing the same |
| CN101682178A (en) * | 2007-06-25 | 2010-03-24 | 三菱电机株式会社 | Metal-closed switch gear |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4822513Y1 (en) * | 1967-12-28 | 1973-06-30 | ||
| JPH0523704U (en) * | 1991-07-23 | 1993-03-26 | 日新電機株式会社 | Ventilation structure for outdoor equipment |
-
2010
- 2010-06-09 JP JP2010131552A patent/JP5554152B2/en active Active
-
2011
- 2011-01-24 CN CN201110033223.4A patent/CN102280823B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08168118A (en) * | 1994-12-15 | 1996-06-25 | Tokyo Gas Co Ltd | Press unit for inner-pressure explosion proof |
| JPH08233189A (en) * | 1995-02-28 | 1996-09-10 | Chiyoda Corp | Pipeline water hammer prevention device |
| CN2899091Y (en) * | 2006-01-25 | 2007-05-09 | 大全集团有限公司 | Pneumatic arc extinguisher of circuit breaker |
| CN101536128A (en) * | 2006-09-20 | 2009-09-16 | 伊顿公司 | Gassing insulator, and arc chute assembly and electrical switching apparatus employing the same |
| WO2008136113A1 (en) * | 2007-04-26 | 2008-11-13 | Mitsubishi Electric Corporation | Metal closed type switch gear |
| CN101682178A (en) * | 2007-06-25 | 2010-03-24 | 三菱电机株式会社 | Metal-closed switch gear |
| CN201142463Y (en) * | 2007-12-21 | 2008-10-29 | 富士康(昆山)电脑接插件有限公司 | Electric connecting assembly |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103812033A (en) * | 2014-02-13 | 2014-05-21 | 昆山振宏电子机械有限公司 | Air outlet structure of low-voltage power distribution cabinet |
| CN103812032A (en) * | 2014-02-13 | 2014-05-21 | 昆山振宏电子机械有限公司 | Air outlet structure of low-voltage power distribution cabinet |
| CN106451189A (en) * | 2016-11-12 | 2017-02-22 | 上海天灵开关厂有限公司 | Door structure of metal-enclosed switchgear |
| CN106451189B (en) * | 2016-11-12 | 2018-09-21 | 上海天灵开关厂有限公司 | A kind of door of metal enclosed switchgear |
| CN110419154A (en) * | 2017-03-15 | 2019-11-05 | Ksm铸造集团有限公司 | Coolant jacket construction |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5554152B2 (en) | 2014-07-23 |
| CN102280823B (en) | 2015-11-25 |
| JP2011259600A (en) | 2011-12-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102280823A (en) | Switch device | |
| CN101636889B (en) | Metal closed type switch gear | |
| US6762389B1 (en) | Gas discharge filter for electrical switching apparatus | |
| WO2017198165A1 (en) | Direct-current circuit breaker | |
| WO2022213639A1 (en) | Power battery assembly and vehicle | |
| JP2016035817A (en) | Module cover upper structure, battery module and method of preventing thermal runaway of battery module | |
| WO2017198166A1 (en) | Arc extinguishing structure for direct-current circuit breaker | |
| JP2011259600A5 (en) | ||
| JP2013107565A (en) | Duct structure | |
| JP5546362B2 (en) | Switchgear | |
| EP2887373B1 (en) | Terminal structure of main circuit part of vacuum circuit breaker | |
| CN207398661U (en) | A kind of independent air-cooled structure of metal-enclosed switchgear bus-bar room | |
| CN106887804A (en) | Device for cooling down the hot gas in high-tension apparatus | |
| CN206422181U (en) | A kind of compact air blast cooling electrokinetic cell system assembly of electronic equation motorcycle race | |
| CN104798161B (en) | For occurring in the cooling device of the gas in installation equipment | |
| CN207743613U (en) | A kind of high current metal-enclosed switchgear handcart cell structure | |
| CN212365905U (en) | Circuit breaker | |
| WO2017221605A1 (en) | Switchgear | |
| CN207651542U (en) | A kind of electric automobile chassis structure | |
| EP3200295B1 (en) | Switchgear | |
| US20060012954A1 (en) | Network protector added load ability through forced convection | |
| CN102510203A (en) | Converter device of MW (Megawatt) excitation wind power unit | |
| CN214064865U (en) | Steam generating equipment | |
| CN211150405U (en) | Arc extinguishing device of high-voltage circuit breaker | |
| CN107799340A (en) | A kind of external air cooling equipment and the breaker for being provided with external air cooling equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151125 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |